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1. For the y and x values listed in file XR15066, obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram, (b) using a normal probability plot, (c) plotting the residuals versus the x values, and (d) plotting the residuals versus the order in which they were observed. Do any of the assumptions of the simple linear regression model appear to have been violated?
2. For the regression equation obtained in Exercise 15.57, analyze the residuals by (a) constructing a histogram, (b) using a normal probability plot, (c) plotting the residuals versus the x values, and (d) plotting the residuals versus the order in which they were observed. Do any of the assumptions of the simple linear regression model appear to have been violated? Comment on whether any of the years were associated with especially high or low fuel consumption for the number of flying hours during the year.
Delayed jobs normally results in lost business, which estimated to be C2 per job per week.Determine the optimum production rate?
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